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TECHNICAL PAPERS

Experimental Analysis of an Axial Inducer Influence of the Shape of the Blade Leading Edge on the Performances in Cavitating Regime

[+] Author and Article Information
F. Bakir, S. Kouidri, R. Noguera, R. Rey

ENSAM–Centre de Paris, 151, boulevard de l’Ho⁁pital, 75013 Paris, France

J. Fluids Eng. 125(2), 293-301 (Mar 27, 2003) (9 pages) doi:10.1115/1.1539872 History: Received May 29, 2001; Revised September 17, 2002; Online March 27, 2003
Copyright © 2003 by ASME
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References

Figures

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Inducers configurations
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Sketch sharpened leading edge
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Hydrodynamic test bench of the LEMFI–Paris
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Experimental performances of the inducer A1 (uncertainty in N±2 rpm, in efficiency ±1 percent, in σ±0.002, in Q/Qn±0.02, in ψ±0.002)
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Appearance of the cavities of cavitation N=1450 rpm,Q/Qn=1.09 (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02)
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Various figures of cavitation, A1 inducer 1450 rpm (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02)
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Overall performances of the inducers A1, A3, and A5, experimental results (uncertainty in N±2 rpm, in efficiency ±1 percent, in Q/Qn±0.02, in ψ±0.002)
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Overall performances of the inducers A1 and A5, POMAX model
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Evolution of the head versus σ available inducers A2 to A5 (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02, in ψ±0.002)
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Cutting influence (uncertainty in N±2 rpm, in σc±0.002, in Q/Qn±0.02)
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Cutting influence—figures of cavitation, N=1450 rpm,Q/Qn=1.27, σ=0.12 (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02)
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Cutting influence—BladeGen+calculation, N=1450 rpm,Q/Qn=1.27, σ=0.25
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Parametric study—BladeGen+calculation, N=1450 rpm,Q/Qn=1.27, σ=0.25
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Influence of the various cuttings on the fluctuations in pressure downstream from the inducer N=1450 rpm (uncertainty in N±2 rpm, in σ±0.002, in Q/Qn±0.02, in Δpf±0.002)
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Sharpening influence (uncertainty in N±2 rpm, in σc±0.002, in Q/Qn±0.02)

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